{"id":11522,"date":"2023-11-28T22:21:45","date_gmt":"2023-11-28T14:21:45","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=11522"},"modified":"2023-12-11T11:04:37","modified_gmt":"2023-12-11T03:04:37","slug":"spring-zhongbean-de-zi-dong-zhuang-pei-shi-shen-me","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/spring-zhongbean-de-zi-dong-zhuang-pei-shi-shen-me\/","title":{"rendered":"Spring\u4e2dbean\u7684\u81ea\u52a8\u88c5\u914d\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

Spring\u4e2d\u7684\u81ea\u52a8\u88c5\u914d\u662f\u4e00\u79cd\u901a\u8fc7Spring\u5bb9\u5668\u81ea\u52a8\u5efa\u7acbBean\u4e4b\u95f4\u4f9d\u8d56\u5173\u7cfb\u7684\u673a\u5236\u3002\u5728Spring\u4e2d\uff0c\u901a\u8fc7@Autowired<\/code>\u6ce8\u89e3\uff0c\u53ef\u4ee5\u6807\u6ce8\u5728\u5c5e\u6027\u3001\u6784\u9020\u5668\u3001\u65b9\u6cd5\u53c2\u6570\u4e0a\uff0c\u4f7fSpring\u5bb9\u5668\u80fd\u591f\u81ea\u52a8\u5c06\u76f8\u5e94\u7c7b\u578b\u7684Bean\u6ce8\u5165\u5230\u6807\u6ce8\u4e86@Autowired<\/code>\u7684\u4f4d\u7f6e\u3002<\/p>\n

\u81ea\u52a8\u88c5\u914d\u6709\u4e09\u79cd\u6a21\u5f0f\uff1a<\/p>\n

    \n
  1. \n\u6839\u636e\u7c7b\u578b\u81ea\u52a8\u88c5\u914d\uff08byType\uff09\uff1a<\/strong><\/p>\n
      \n
    • Spring\u5bb9\u5668\u4f1a\u81ea\u52a8\u5339\u914d\u5c5e\u6027\u3001\u6784\u9020\u5668\u6216\u65b9\u6cd5\u53c2\u6570\u7684\u7c7b\u578b\uff0c\u7136\u540e\u5c06\u4e0e\u4e4b\u5339\u914d\u7684Bean\u6ce8\u5165\u8fdb\u6765\u3002\u5982\u679c\u5339\u914d\u5230\u591a\u4e2a\u540c\u7c7b\u578b\u7684Bean\uff0c\u4f1a\u629b\u51faNoUniqueBeanDefinitionException<\/code>\u5f02\u5e38\uff0c\u6b64\u65f6\u53ef\u4ee5\u7ed3\u5408@Qualifier<\/code>\u6ce8\u89e3\u89e3\u51b3\u6b67\u4e49\u3002<\/li>\n<\/ul>\n
      @Autowired\nprivate MyDependency myDependency;\n<\/code><\/pre>\n<\/li>\n
    • \n\u6839\u636e\u540d\u79f0\u81ea\u52a8\u88c5\u914d\uff08byName\uff09\uff1a<\/strong><\/p>\n
        \n
      • Spring\u5bb9\u5668\u4f1a\u81ea\u52a8\u5339\u914d\u5c5e\u6027\u3001\u6784\u9020\u5668\u6216\u65b9\u6cd5\u53c2\u6570\u7684\u540d\u79f0\uff0c\u7136\u540e\u5c06\u4e0e\u4e4b\u540d\u79f0\u5339\u914d\u7684Bean\u6ce8\u5165\u8fdb\u6765\u3002\u5982\u679c\u5339\u914d\u5230\u591a\u4e2a\u540c\u540d\u7684Bean\uff0c\u4f1a\u629b\u51faNoUniqueBeanDefinitionException<\/code>\u5f02\u5e38\uff0c\u6b64\u65f6\u53ef\u4ee5\u7ed3\u5408@Qualifier<\/code>\u6ce8\u89e3\u89e3\u51b3\u6b67\u4e49\u3002<\/li>\n<\/ul>\n
        @Autowired\nprivate MyDependency myDependency;\n<\/code><\/pre>\n<\/li>\n
      • \n\u6784\u9020\u5668\u81ea\u52a8\u88c5\u914d\uff1a<\/strong><\/p>\n
          \n
        • Spring\u5bb9\u5668\u4f1a\u9009\u62e9\u5339\u914d\u7684\u6784\u9020\u5668\uff0c\u5e76\u5c06\u76f8\u5e94\u7c7b\u578b\u7684Bean\u6ce8\u5165\u5230\u6784\u9020\u5668\u4e2d\u3002\u5982\u679c\u6709\u591a\u4e2a\u6784\u9020\u5668\uff0cSpring\u4f1a\u9009\u62e9\u4e0e\u53c2\u6570\u6700\u591a\u7684\u6784\u9020\u5668\u8fdb\u884c\u5339\u914d\u3002<\/li>\n<\/ul>\n
          @Autowired\npublic MyClass(MyDependency myDependency) {\n    this.myDependency = myDependency;\n}\n<\/code><\/pre>\n<\/li>\n<\/ol>\n
          \u81ea\u52a8\u88c5\u914d\u53ef\u4ee5\u51cf\u5c11\u624b\u52a8\u914d\u7f6eBean\u4f9d\u8d56\u5173\u7cfb\u7684\u4ee3\u7801\u91cf\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u7b80\u6d01\u6027\u548c\u53ef\u8bfb\u6027\u3002\u5728\u4f7f\u7528\u81ea\u52a8\u88c5\u914d\u65f6\uff0c\u9700\u8981\u786e\u4fdd\u5bb9\u5668\u4e2d\u5b58\u5728\u5339\u914d\u7684Bean\uff0c\u5426\u5219\u4f1a\u629b\u51faNoSuchBeanDefinitionException<\/code>\u5f02\u5e38\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u901a\u8fc7\u5728\u914d\u7f6e\u7c7b\u4e2d\u4f7f\u7528@ComponentScan<\/code>\u6ce8\u89e3\u542f\u7528\u81ea\u52a8\u626b\u63cf\u673a\u5236\uff0c\u8ba9Spring\u5bb9\u5668\u81ea\u52a8\u53d1\u73b0\u5e76\u6ce8\u518cBean\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
          Spring\u4e2d\u7684\u81ea\u52a8\u88c5\u914d\u662f\u4e00\u79cd\u901a\u8fc7Spring\u5bb9\u5668\u81ea\u52a8\u5efa\u7acbBean\u4e4b\u95f4\u4f9d\u8d56\u5173\u7cfb\u7684\u673a\u5236\u3002\u5728Spring\u4e2d\uff0c\u901a\u8fc7@ […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[121],"tags":[],"class_list":["post-11522","post","type-post","status-publish","format-standard","hentry","category-spring"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11522","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=11522"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11522\/revisions"}],"predecessor-version":[{"id":17063,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11522\/revisions\/17063"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=11522"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=11522"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=11522"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}